Hi, There's a bug report: https://bugzilla.kernel.org/show_bug.cgi?id=210655 [[ Under "Ptrace access mode checking", the documentation states: "1. If the calling thread and the target thread are in the same thread group, access is always allowed." This is incorrect. A thread may never attach to another in the same group. Reference, ptrace_attach() https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/kernel/ptrace.c?h=v5.9.14#n380 ]] I just wanted to make sure that it is a bug in the manual page, and not in the implementation. Thanks, Alex -- Alejandro Colomar Linux man-pages comaintainer; https://www.kernel.org/doc/man-pages/ http://www.alejandro-colomar.es
